Help. Recording into Creative Live Drive

I have been practicing my harp techniques for a few months now and would like to record my practice sessions into my computer through my Creative Sound Blaster Live drive. There are two MIDI ports (one in, one out) as well as SPDIF ports in and out.

Microphone aside, do I need to purchase a device, such as a mixer, to feed into the Live Drive or can it be done directly from the mic. I have not purchased the mic yet but I am leaning towards the Green Bullet.